That is a list of processes using the most CPU time. Or more easily
said: that are the apps that have been running the longest time. The
first four are system processes (SpringBoard is essentially the thing
that shows your home screen and stuff), at the bottom there is the
Facebook app. It is using twice as much time as DTMobileIS (that is the
process that feeds Instruments with live data from the phone). That
seemed a little much to me. I’m using Facebook quite often, but not like
every minute of the day.